Spatial memory under emotion: Effects across encoding, maintenance and retrieval.

Emotions modulate spatial memory, yet their impact remains inconsistent across contexts. For example, fear may enhance attention to landmarks or induce spatial disorientation. Traditional emotion-memory models, mainly focused on episodic memory, fail to account for these mixed effects. We propose that emotional valence affects spatial memory as a function of both the memory phase (encoding, maintenance, retrieval) and the reference frame: egocentric (body-centred) or allocentric (environment-based). In three experiments, we manipulated the timing of emotional stimuli while participants performed spatial memory tasks. Negative emotion impaired egocentric encoding, whereas positive emotion reduced allocentric encoding. During maintenance, both valences broadly disrupted spatial performance, suggesting interference with cognitive control. At retrieval, only allocentric judgements were affected. Moreover, individual traits such as mood, interoception and alexithymia predicted egocentric more than allocentric performance. These findings support a stage-dependent model in which emotional stimuli interact dynamically with spatial representations. This framework offers a novel perspective to reconcile conflicting results in the literature and advances understanding of how affective states shape adaptive and maladaptive spatial behaviours.